Harley Evolution Big Twin Inner Rocker Cover (OEM Casting #17507-85)
A good OEM casting with the Factory casting number present on the interior. Chrome remains bright and clean with only minor blemishes and light finish wear.
We have seen some minor variations on these early Evolution covers, so please study our photos carefully. Most Factory references show OEM Part #17521-84B, which was used as late as 1991 on FLT and FXR models. In 1992, a new part number was used.
The same part number is indicated for front or rear use.